1. Abbreviation for "I seek you". 2. A proprietary ef="module.php?name=Lexikon&file=search&eid=1&query=chat">chat system created by a couple of israeli guys, who later founded "mirabilis". ICQ was sold to {America On-Line} around 1998. The name "ICQ" is a play on "cq", the radio signal for seeking conversation. ef="http://www.icq.com/">Start . [Confirm derivation? TCP? Summary?] (2000-04-03)